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Aneli [31]
3 years ago
14

Assume we perform a known-plaintext attack against DES with one pair of plaintext and ciphertext. How many keys do we have to te

st in a worst-case scenario if we apply an exhaustive key search in a straightforward way? How many on average?
Computers and Technology
1 answer:
nasty-shy [4]3 years ago
5 0

Answer:

2^{55} keys in a worst case scenario

Explanation:

So, Average will be : 2^{56} /2

2^{55}(Answer)

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What property of semi-metals is useful in the computer industry?
artcher [175]
The answer is (a. Semi-conducting)
In the computer industry, semi-metals with a semiconducting property are useful in making of semiconductors. These metals have high resistance but lower than compare to insulators. This conductor could be crystalline or amorphous solids.
4 0
3 years ago
Problem statement: Using loop, write a program that will ask the user to enter a character for left or right. Then, the user wil
zvonat [6]
Define variables
left is l
right is r

Ask input
left or right

Ask input value

Equate l or r to the input value

Show ladder with steps equal to input value and in the side of input variable
7 0
3 years ago
What is the output of intb= 4+ 6 /2 Systemoutprintln (b)
uysha [10]

Answer:

Command: Systemoutprintln (b)

Output: 7

Explanation:

To solve this problem, we must take into account the precedence of operation.

The division takes precedence before the addition, so we must divide before we add for b.

So

int b = 4 + 6/2 = 4 + 3 = 7.

So

Command: Systemoutprintln (b)

Output: 7

5 0
3 years ago
Compter History Large Resume Include: the beginnings of the computer and its development during the years The events of computer
NikAS [45]

Answer:

The development of computers from the beginning to what we see now is called the computer generations. It is gradual advancement in the technology in the making of the computer.

Explanation:

The generation in computer technology can be defined as the development or the change in the technology in the computer as it was used. There were  five generations of computer development. They were :

1. First Generation computers

   In this generation, vacuum tubes was used in the circuits. It dated from 1946 to 1959.

2. Second Generation computers

  These are transistors based computers. This generation ranges from 1959 to 1965.

3. Third Generation computers  

    This generation computers were Integrated circuit based. The generation stared in 1965 and ended in 1971.

4. Fourth Generation computers

   The computers of this generation used VLSI microprocessor in the circuits. The period of the 4th generation computers are from 1971 to 1980.

5. Fifth Generation computers

   The computers of this generation used ULSI microprocessor in the circuits. The 5th generation computers started from 1980s.

4 0
2 years ago
Consider the recursive method whose definition appear below. Why? public static String mysteryString (String s){ if(s.length()==
Marizza181 [45]

Answer:

retupmoc

Explanation:

1.) Anwser will be retupmoc

because

public static String mysteryString(String s){

if(s.length() == 1){

return s;

}

else{

return s.substring(s.length() -1) + mysteryString(s.substring(0, s.length()-1));

}

}

In this program input is "computer" . So the function mysteryString(String s) it does

return s.substring(s.length() -1) + mysteryString(s.substring(0, s.length()-1));

so when it enters the first time ??s.substring(s.length() -1) and it will be give you 'r' then it calls the function recursively by reducing the string length by one . So next time it calls the mysteryString function with string "compute" and next time it calls return s.substring(s.length()-1)? + mysteryString(s.substring(0,s.length-1)) so this time it gives "e" and calls the function again recursively . It keeps on doing till it matched the base case.

so it returns "retupmoc".

6 0
3 years ago
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